Coin operated box telephone unit



FIG. 1 is a perspective view of a coin-operated box telephone unit showing my new design;

FIGS. 2 and 3 are respectively front and rear elevational views thereof;

FIGS. 4 and 5 are respectively left and right side elevational views thereof; and

FIGS. 6 and 7 are respectively top and bottom plan views thereof. 

The ornamental design for a coin operated box telephone unit, as shown and described. 